Double slip point



Feb. 10, 1931. w GERMANN 1,791,867

DOUBLE SLIP POINT Filed Oct. 30, 1930 .f/Wenior/ m germ m Pa ented Feb.10,1931 I l I V UNITED STATE WILHELM ennmmmror DOETMUND,ennivrAnYjAssmNoR TO THE FIR-M. vnnnrnre'rn STAHLWERKEAKTIENGESELLSCHAFT, OF DUSSELZDORF, GERMANY noUB n SLIP ronv'rApplication filed October 30, 1930, Serial No. 492,299, and in GermanyNovember 9, 1929.

V The invention relates to another improve--- ment of the double slippoint according to mv' prior application Serial No. 488,481, filedOdtober 13,1930; In this prior application'a double slip point withtongues disposed outside the diamond has been disclosed which ischaracterized by the fact that the centre piece of rail which is passedover by therolling stockon both sides is formed by a rail-like rolledsection having a width of its head large enough to enable the curvedrunning edges to be machined-in laterally.

Furthermore, according to the prior application, the said rolled sectionmay be used for manufacturing the three frogs of the double slip point.

The invent-ion represents a broader aspect of the principle of using therolled bar forming the centre piece of rail of the switch formanufacturing the other parts of the switch,

also the counter-point of the switch being formed, according to theinvention, by the rail-shaped rolled section.

As compared with the now nearly exclu sively adopted practice ofmanufacturing this partby casting the present invention represents aconsiderable economy and'simplification in the production of the entiredouble slip point, since all parts, excepting the tongues, may now bemanufactured from I the same rolled section.

7 According to the invention the counterpoint is formed in such a waythat the centre rail of the switch which is passed over by the N rollingstock on both sides is split at its end,

spread apart and bent, in addition thereto the rolled section beingpointed according to the The drawing shows two constructional ex amplesof the invention.

In Fig.1 the counter-point 1 of the double slip point is integral withthe centre rail 2. The rail-like rolled section forming the centrerail'is correspondingly split at its end, spread apart andbent, wherebythe counter- I point is produced.

j' Accordingto Fig.2 the counter-point forms y .ffact that the centrepiece of rail which is passed over by the rolling stock of both sides.is formed from a rail-like rolled section having a great width of headportion andsplit at its ends, spread apart and bent and that thereby andby pointing the rolled section according to the shape of thecounterpoint,

the counter-points of the switch are formed.

2. A device according to claim 1 characterized by the fact that thecentrepiece with counter-point is subdivided at about the centre.

3. A device according to claim 1 characterized by the fact that thecounter-points are formed as separate parts and are manufactured fromthe same rolled'section as the centre piece of the switch by splitting,spreading apart and bending.

In testimony whereof I aflix my signature.

WILHELM GERMANN.

of rail preferably being subdivided at half its length. I 1

The invention also comprises the construc-. tion of the counter-point asarseparatepart which is attached to the centre piece of rail.

The manufacture is efiected in much the same way by splitting, spreadingapart and bending from the rolled section which also forms I the centrepiece of rail.

